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View Full Version : 1999 Buick Regal blown valve cover


sdries
01-21-2006, 09:43 AM
Info:
tuesday AM my wife parks car in driveway and the internal blower, for passenger heat and air conditioning, runs full blast with the engine off and key removed. After the second try of restarting and stopping the blower stops. 4 hours later she attempts to start the car and gets no response, completely dead battery, and the key will not come out of ignition, due to dead battery. Not knowing enough about cars, I call AAA and tell them situation. When AAA arrives at 6pm they put jumpers on battery and attempt to start car. No turn over, just instant backfire type explosion, except the oil cap and entire valve cover were blown off. Dealership, where it is for repairs, is telling me they have never seen this happen before and the "blown resistor motor", which they say was the original problem, "may" have cause the fuel injectors or fuel pump to continue operating until it filled the engine. Hours later it dispated enough to be explosive. Has anyone heard of this? :shakehead

turbodreamswrx
01-21-2006, 09:54 AM
thats a first for me, never heard of that before ever

Kuke

Blown_SC
01-21-2006, 10:30 AM
Moved to the Troubleshooting forum. I'm of no help, hopefully someone with some experience with that will see it here.

Falcon70
01-21-2006, 12:01 PM
The relay shorting out making the blower motor continue to run sounds logical. I guess it could have made the fuel pump run for long enough to do that, but without the ECM telling the injectors to open it shouldn't have filled the engine up. Don't know for sure.

Hjholter3
01-21-2006, 02:45 PM
the injectors would have been closed, and it wouldn't build up pressure without killing the fuel pump...

sdries
01-22-2006, 05:31 PM
Moved to the Troubleshooting forum. I'm of no help, hopefully someone with some experience with that will see it here.
I realized it was in the wrong place but didn't know how to move it. Thanks

sdries
01-22-2006, 05:43 PM
Well, I got the car back from the dealer, $1100 later, stating that the upper intake manifold had blown off and was fixed with no explaination of possible cause, just that the engine is now reassembled and working good "at this time". Should I be chasing GM for $700 of this repair for the backfire and should I be concerned that this might happen again? Thanks for all the input.

sdries
01-22-2006, 05:45 PM
Just a side note. There was no listing of replacing a fuel pump, just the manifold and gaskets.

Revolution
01-22-2006, 05:50 PM
I have never actually heard of that happening without spraying nitrous on it.

xero
01-22-2006, 06:58 PM
one question, did you get it on video? thats sounds like some cool shit to watch!!!!!

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